合伙企业的合伙协议应当采用书面形式。如果合伙人之间未订立书面形式的合伙协议,则合伙必然不成立。()
参考答案:错误
美国教育家孟禄主张的教育起源论被称为是_________起源论;而马克思主义观点认为,教育只能起源于_________ 。
The boys spent the whole morning _______ possible answers to the question.
A. discuss
B. and discussing
C. discussing
D. and discussed
Stressful environments lead to unhealthy behaviors such as poor eating habits, which ________ increase the risk of heart disease.
[A] in turn
[B] in return
[C] by chance
[D] by turns